Usability testing of a digital tool to support behavioural activation for depression with young people aged 12 to 18.

Background: Adolescents with depression cannot access timely support due to pressures on specialist mental health services. We developed and tested a manualised version of behavioural activation-a brief psychological intervention-for delivery in the community by non-specialists. We digitalised the paper version of the behavioural activation manual as a more accessible and user-friendly route for completing therapy tasks. Methods: Young people who received manual-based behavioural activation as part of a large trial were invited to test the digital tool. Following a demonstration, participants were asked to use the digital tool in their own time over 4 weeks, completing tasks such as activity scheduling that they had previously completed using pen and paper. Participants then attended a one-to-one interview lasting approximately 30 min to provide feedback on the digital tool. All interviews were audio-recorded and transcribed verbatim and analysed using Template Analysis. Results: Overall, 14 participants, aged 13-to-17-years Conclusions: Overall, the young people perceived the digital tool to be a useful and accessible resource that could support their mental health journey, both during and after therapy. The digital tool's features for planning, reflection, and visualizing progress were particularly valued. Identified improvements included the incorporation of reminders, in-app guidance, customization options, and a journalling feature to enhance engagement and the therapeutic value of the digital tool. Clinical Trial Registration: https://doi.org/10.1186/ISRCTN57377955 Identifier: ISRCTN57377955.